Electrical signaling and switching apparatus.



R, H; MANSON.

ELEGTRIGAL `SIGf.NAI .I1\TGf AND SWITGEING APPARATUS.

APPLICATION FILED SEPT. 10, 1906.

934,977', Painted sept.21,19o9.

RLH. MANSONl ELECTRICAL SIGNALING AND SWITGHING APPARATUS.

APPLIoATIoN FILED SEPT. 1o, 1906.

934,9'?7 I Patented sept. 21, 1909.

2 SHEETS-SHEET 2.

f entran stares rn'rnnr ernten.

RAY H. MANSON, OF ELYRIA, OI-IIO, YASSIGNOR TO THE DEAN ELECTRIC COMPANY, GF ELYRIL OHIO, A CORPORATION OF OHIO.

ELECTRICAL SIGNALING AND SW'ITCHING APPARATUS.

Specification of Letters Patent. Patented Sept. 2t

Original .application filed June 14, 1905, Serial No. 265,242. Divided and this application tiled September 1o, 190e. Serin No. 334,008.

lb all whom itma'y concern:

Be it known that Il RAY H. MANsoN, a citizen ot the United States, residing at Elyria, in the county of' Lorain and State of Ohio, have invented cert-ain new and useful- Iniprovements in Electrical Signaling and Switching'Apparatus, of which the tollowing is a specitication, reference being had therein ,to the, accompanying drawing.

My invention relates to yelectrical signaling and sw-itcliing. apparatus, and particularly to what are known as combinedannunciator drops and jacks.

,Some features of my invention may be employed 4to advantage elsewhere than vin the combination I have here described, but

all are particularly useful in connection with' telephone exchange switchboards.

` The present application. is a division .o t

my prior application, Serial No. 265,242, tiled June"A 14, 1905, for electrical signaling and switching apparatus, and is directed particularly to, certain broad features ot the invention involving electromagnetstructures in general'. This includes the front "frame of a combined annunciator andspring 'jack which I have chosen as the specific embodiment tor be described and illustrated herein.l without being limited thereto. Units of Ythis type are usually assembled and mounted either separately or in strips of ten, and their connection and adjustment in a switchboard are usually assigned to unskilled labor. Moreover, a large percentage ot the switchboards 'of this type are used in small exchanges, t'requently isolated, where all repairs, the replacement of parts, an'dthe like, must oi necessity be accomplished not only without the. assistance of skilled labor, but frequently without. ,any but -`t\he most primitive tools. l have designed a combination piece ot' apparatus to ymeet these conditions, the results attained in' point of convenience and etiiciency being ot' course desirable in any circumstamees and in any loca; tion. Y f

Briefly stated, my invention comprises a front plate upon which all the parts are mounted, a tubular iron-clad electromagnet end-,supported on said plate, a drop shutter with night alarm contacts, controlled by the magnet, a spring-jack lying beneath and parallel with the electromagnet and also end, supported on the plate, and a long spring'` through the entire device.

movable with one ot the jack springs when tubular casing, For this no tools are ref,

quired, and as all parts are interchangeable the greatest Yfacility is thus provided for making repairs` f I The specific novel features oimy invention will be pointed vout in the it'ollowing detailed description and the claims appended hereto.

The invention is illustrated in t-he accom- :panying drawings wherein,

Figure l is a vertical longitudinal section F ig. 2 is a bottom plan View showing the traine and springs ,of the jack.` Fig. 3 is a roar end elevation. 4ig. 4f is a side view of the electromagnet with portions of the other parts in section, showing my improved arrangement ofthe night alarm contacts. Fig. 5 is a front view of the complete unitassembled as it appears when mounted in a switchboard.

Inthe drawings A is the front-plate, .pret-l erably of metal, which will .be described as it is shown, that is in a single" unit section,

although it may extend to a sutlicient length for the accommodation and support ot' ten or more units:- `lU pon `the rear tace of this plate I provide a sheet 'of insulating material a2, and secured against this in any suitable manner, as by means of screws extending through thefront plate, is the tubular iron shell 15 extending horizontally to the rear, and housing within it the electroimlgnet C whose core c is secured at the front end to the. end of the shell so as to form a good magnetic circuit. At the rear end of the shell I provide a saddle or yoke 7J", screwed or riveted to the shell and having a raised middle portion 6 and ears b3 between which the armature and its detent rod are pivoted. The armature is indicated by the letter Z), in Figs.' l and 3, and is in general-shape like a shield, with upwardly projecting lugs 7/4) and side portions-out away to accoimnodatc the' magnet terminals. The lugs 715 fit against the inner faces of the ears 53, and between these lugs lies the pivot block 7) through which and through the lugs and ears passes the pi vot pin bw. The lower outer edge ot the pivot blocl( is cli-aint( i ed oll' to form a normal bearing tace lfor tht` ends ot a spring o4, secured by screws upon Ythe lower part olf the outer tace of the armature. Secured solidly to the pivot bloclt 7) and lying along the top-ot the shell B, is the armature detent rod ZIJ, whose front. end passes through an ope-nine, a, in the upper part of the plate A, and is then bent down at an angle with its axis, terminating in a hook or detent 7)?. Upon the upper part ol the tace ot the front plate A is secured in any suitable manner, as by screws passing into the plate, the shutter plate (Z formed with two bent ears Z0 to receive the shutter pintle d2, and insulated from the plate by the interposed rubber or liber at". Pivoted upon the pintle (l: and normally held up in trent ot the plate (l by the hook end ZIT of the rod b2 is the drop shutter D, aaving the opening IZ thrmigh its upper portion for the passage ot the detent, and upon its lower edge having` 'tour tongues or projections d, all, di" and dit. (See Fig. The tongues (1" and d are bent over to take around and form bearings :lor the pintle (Z2. The tongue d* is tor restoring purposes, and the tongue d controls ythe night alarm contacts.

Below the shut-ter l) the liront plate is cut out to form an opening` c for the passage ot' the nightalarm and restoring springs, to which further reference will be made and in order to cover this opening as well as to protect the projecting ends of the springs, I provide the box or casing E, pret'- erably formed up out olf sheet metal, with openings, c and e?, and ears c, whereby it is secured upon the tace plate by rivets or otherwise. (See l? ig.

Below the housing l5 lies the jack J, the working parts or which are supported in a frame composed ot two longitudinal side strips J', J2, joined at their front ends by a yoke piece y" and at their rear ends by a horizontal yoke-plate j upon which and between the side plates are mounted the various operating springs. rlhe jack frame is secured to the front plate It by the bashed thimble '22, the insulating plate extending down between the frame ahd the front plate l and being pierced for the passage oli' the thimble shank, while the latter is surrounded by the insulating bushing whereby the j acl; trame and (,fonnecting Darts are entirely insulated from the 'liront plate. This is desirable lor several reasons one being the prevention ot possible crosses or short-circuits between or on the diil'erent lines whose units are carried on the same plate, or whose plates are secured on the saine metal switch board. trame. 'lhis is particularly necessary, also, because one of the night alarm contacts is grounded on Vthe trame, the other being insulated in each ease.

The jack springs are lour in number, comprising the two contact springs j" and j, the anvil spring j" upon. which the spi'ing (il normally rests, and the restoring spring ji, whose forward end j extends lout through the opening a. in the lirontplatc, into the box or housing E and is there turned up as shown in Fig. 1, lying below the end of the tongue d* on the drop shutter. Intermediate ot its ends the spring rests upon an insulating stud which is preielally shouldered and has its neck lying` in an opening'in the spring to prevent lateral displacement. rlhe spring in the idle condition ot the apparatus lies upon a bridge piece or stud J 1*, extending from side to side ot the jack trame and comprising an o uter ii'isulating sleeve and an inner metal stud having its ends riveted into the two trame plates. This stud also receives on its under tace the thrust of the anvil spring j, with which the tip spring makes strong contact while idle. T he adjustnient ot the parts is such that they will lie in the position shown in llig. l when the apparatus is in disuse, and a ca eiful examination of this ligure will show that with my arrangement it is possible to secure both easy assembling and peri'ect adjustment ot the jack before the latter is applied to the front plate at all. lil/hen the complete apparatus is iinally assembled all together, the steady-pins j lie in corre- ;ponding openings in the rear Lt'ace ol the insulated plate ai, the jael; 4structure being thus prevented 'rom turning, which it might do it secured by the thimble jg, only, since this latter is tapped into the yolre y" and unless riveted might in practice be slaclied up enough to permit the jack to have some slight play, thereby spoiling the adjustment ot the springs and particularly the restoring spring.

'lhe jack springs are secured at their rear ends by being piled up with interposed slips ot insulating material upon the cross-yoke j, and held in such position by the clamping plate jm' and the screws jm, the latter being bushed if required and tapped directly into the yoltefplate. .in order to permit ot' inspection and adjustn'ient after assembling the jack-springs, l cut out the side plates J and J2, to form openings, O, as shown in Fig. l.

'lhe electroinagnet C, either in its entirety or merely as regards the spool and winding, is made removable from the shell B, without tools. According to my preferred consti-uc tion the core c is riveted at its end to the end of the shell, and the spool containing the windings can be slid in and out by merely throwing up the armature around the pivot b1 int-o the position shown in dotted lines in Fig. l. With the armature thrown up the coil may be slid out, and a new coil slid in, such substitution being i llo quite frequently required in cases of burn- Y tion shownin l? ig. l, when signaling curouts and the like. 'In order to secure the spool removably in place I provide the outer head with a projecting pin c .which when the coil is inserted passes into a slot'b12 in the lower edge of the shell and is engaged by a latch spring B secured upon the under side of the shell. .In order to withdraw the coil this spring is depressed, and when a coil is-'inserted the spring snaps over the pin` and holds it 'in.place.

A In order to make electrical connection bes,

tween the coil and the jack terminals, I provide the solid pivoted hasps H, I-I secured at 1,15 their lower ends to the proper terminals on 'the jack frame, and at their upper ends en- (raging the terminals c2, c3 secured to the ead of the spool. The hasp H is pivoted on a screw h tapped into the sleeve jm formed 2,0 upl on the rear end of the anvil spring j,- while the hasp H is pi'voted on the `screw L tapped into the sleeve y'5fornied up ori the rear: end of the contactK spring j. The contact spring jt also has asleeve j, Which takes ja screw 71,2., but there is no haspfconnection, the only purpose in this case being to provide a solid terminal for attachment of the circuit Wires. F or this purpose I secure by means of the screw h2 a tailed washer 71.", having its outer end perforated for the attachment by solder of the linewire. The other side ofthe line is attached to a similar perforated tail formed on the hasp H. y It will thus be observed that when `the hasps H and H are turned upto engage the two terminals 02, c3, and the screws c3 arektightened upon them, that the magnet winding is bridged across the two springs, i5, j, and as the latter is normally in contact witlrthe spring j* and as the springs and j* are the line terminals, it follows that". the

magnet' is normally bridged across the Iline4 and is cut out when a plug'is inserted.

Referring to Figs. 4L 'and 5, the arrangement of night alarm contacts is seen to best advantage. The spring N is secured by screws or otherwise to one side of the tubular shell B and has itsforward end extending through the opening ai in the front 50 plate and into the box or housing. l'lfhis end is turned up as shown at nin Fig. 4, and lies in the opening c to be engaged when the drop is down, this engagement to be effected by means of the tongue (Z3 formed on the drop. When the spring is engaged by the tongued3 the end n is pressed downward so that a contact carried thereby is pressed against an "anvil contact n supported as indicated from. the front plate and grounded thereto. From this it will beseen that only one. circuit connection is required to be made for the night alarm circuit when a new unit is attached to the switchboard.

The operation of my improved apparatus is as follows: They parts all being in the posirent comes over the subscriber-s line it passes in by way of the terminal h3 and hasp H., throughthe coil C, back through hasp H to ythe springl j, thence to the .spring jt, and

back to line by way of the terminal ht. The armature Z) being attracted, the rod b2- is lifted, the hook bldetached from the shutter, and the latter falls. The tongue (Z3 then engages thev night alarm spring a to close that circuit, and the tongue Z4 comes down upon and overlies the end of the restoring spring js, as shown in dotted lines in Fig. l. It.should be stated that this tongue is not essential, the idea being that the re- 8O storing spring should engage and lift the drop shutter. Vhen the plug is inserted in response to the call itvspreads apart the springs j* and j, the former lifting off the Contact j and thereby cutting out the drop, v

while the other lifts the stud j and the restoring spring j?, the outer end of which passes up through the slot e2 in the box E and lifts the shutter I) until it again engages and retained by the hook tf'. In putting 90 a unit into a switchboard the front plate is secured upon the frame, and the line-wires are soldered to the terminals h3, 71,4. Nothing more is required. In replacing a burned out coil, the screws 030 are loosened and the hasps H and H thrown down into the position shown in dotted lines in Fig. 3. This exposes the face of the armature b and removes all obstructions, so that'by simply inserting the finger below the projecting lower end ofthe spring b4, the entire armature vcan be -syif'ung up into the position shown in dotted lines in Fig. 1, being retained there by the pressure of the spring b4 on the top ofv the pivot block b. Thenby'depressing the 105 end of the spring B so as to clear the. pin c, the spool may be withdrawn and a new'one substituted. The armature is then turned down, the' hasps thrown up into position and the screws et tightened up, when the apparatus is again in condition for operation.

I am raware. that many changes may be made in matters of shape or in non-essential details of construction without departing `from the spirit of my invention, and I wish it understood that I include all such within the scope and purview thereof.

Il'aving'thus described my invention, what I claim and desire to secure by Letters Patent is: l

1 An electromagnet comprising a mag-t netic frame, a spool carrying the magnet winding and adapted to be supported in or onsaid frame. and a spring latch detachably securing the parts together, substantiallv as 125 described.

2. An e'lectromagnet comprising an iron shell and core, a spool carrying a winding and adapted to be supported within the shell upon the core, together with ai spring latch therein, an arniature carried on the 'frame and normally in operative relation with the magnet spool and core, together with means for holding the armature in an .inoperative position to permit the removal of the spool, substantially as described.'4

An electromagnet comprising a tubular shell and a spool carrying an energizing winding, detachably secured within said shell. an'armature carried npon one end ot the structure and normally obstructing the opening thereot7 together with means to hold the armature Without detaching it so as to clear the end of the tube and permit the removal of thedetachable spool7 substantially as described.

G. An electromagnet comprising an iron tubular shell and a magnet spool removably secured therein, spring locking. means for securing the coil in the shell, an armature secured at one side of the end oit the shell and normally extending across the same, together with actuating means secured to the armat-ureito permit its being moved to clear the end of the shell Without moving the actuating means.

7. An electromagnet having an iron shell or frame and a detachable spool carrying an energizing Winding, means for securing the electromagnet to a support, an armature structure composed of tivo parts joined together, one part constantly maintained in fixed relation. With the cooperating parts of the structure, and the other part of the arn'iature being relatively movable on the first part to permit the magnet spool to be.

detached Without removing the electromagnet from itsA support, substantially as described.

8. An electromagnet having a two-part liointed -armature with means to securely hold the parts when set, in operative and inoperative positions, substantially as described.

S). An electromagnet having a `jointed armature in two parts, withmeans for securing the parts in variable mutual relations, substantially as described.

l0. An electromagnet having a jointed armature in tvvo parts, a cam on one part and a spring on the other part bearing on said cam, substantially as described.'

1l. An electromagnet comprising a supporting frame and a spool carrying an energizing Winding detachably secured upon said fran'ie,'an armature normally in open' ative relation therewith but obstriicting the path of removal of the spool, circuit ter minals for the spool' passing' through openings in the arniature and connecting hasps detachably secured to said terminals and overlying portions of the armature, the Whole so arranged that the said hasps may be detached 'trom the terniinals, the armature moved into an operative position, and the magnet spool .then removed from the trame, substantially as described.

12. An. electromagnet having a '\,f'inding, a spool carrying said winding, and means carried by the electromagnet for engaging the spool when the Winding is in operative positionI` such engaging means adapted to be disengaged while the winding is in its operativeI position. whereby the spool may bc removed :from the core.

An electromagnet having a winding, a spool carrying said Winding7 and a lock :for removably retaining the spool With the Winding in operative position relatively to the electromagnet, suoli lock adapted to be disengaged While the Winding is in its operative position whereby the spool may be removed from the core.

14. An electromagnet having a Wiiiding, a spool carrying said Winding and a lock for removably retaining 4the spool with the Winding in operative position relatively to the electromagnet7` and a supporting plate for the eleetromagnet, sucli,lock adapted to be disengaged to permit removal ot the spool Without removing the electromagnet from the plate. v 4

15. An electromagnet comprising a tnbire lar shell, a core secured to oneend ot the shell, an energizing Winding adapted to be supported on the core on a removable spool7 .an armature normally supported in operative positionat the other end of the shell, and means for'removing the armature from its operative position to permit the removal of the coil and spool from the core.

16. An electromagnet comprising a tubular shell, a core secured to one-end oithe shell, an energizing Winding adapted to be supported on the core on a removable spool, an armature normally supported in oper- .ative position at the other end of the shell,

and means for removing the armature from itsfl operative position to permit the removal o'tthe coil and 'spool from the core Without changing the adjustment oi the armaturesupporting means When the armature is replaced in its operative position.

17; An amninciator, including an electromagnet, a spool upon which the same is disposed, a casing Within Which the spool is contained, and a locking device for holding the said spool in posit-ioirnfithin the casing including one locking member carried by the spool and a companion locking member havin@ a mountno' slbsi'uutall stationr I Jrovided uyon the balance of the annunwith respect to the casing. clator structure. l0 18. The combmutlou o' au mmunclator In testlmony 'hereof I ax my slgnature whose Winding is removable with reference in presence of two witnesses. to the balance of the :umuncmi'or structure,

RAY H. MANSON. and a. loekmg devlce hnvmg 011e lockmg 'vltllesses: l member provlded upon the removable Wmd- A. D. T. Lumy,

ing strurture :lud the other locking' member S. J. ROBERTS. 

